Android自定义View绘制三个相交的圆

最新推荐文章于 2024-05-24 08:30:00 发布

c_bulrush

最新推荐文章于 2024-05-24 08:30:00 发布

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本文链接：https://blog.youkuaiyun.com/c_bulrush/article/details/78119827

本文介绍如何使用Android Canvas绘制三个不同大小和位置的空心圆，并设置了圆的颜色和边框宽度。

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在onDraw()方法中进行绘制

  @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
          //三个圆
        Paint paint1 = new Paint();
        Paint paint2= new Paint();
        Paint paint3= new Paint();
        //清除锯齿
        paint1.setAntiAlias(true);
        paint2.setAntiAlias(true);
        paint3.setAntiAlias(true);
        //设置颜色
        paint1.setColor(Color.BLACK);
        paint2.setColor(Color.BLUE);
        paint3.setColor(Color.RED);
        //绘制空心圆
        paint1.setStyle(Paint.Style.STROKE);
        paint2.setStyle(Paint.Style.STROKE);
        paint3.setStyle(Paint.Style.STROKE);
        //设置画笔的宽度
        paint1.setStrokeWidth(5);
        paint2.setStrokeWidth(5);
        paint3.setStrokeWidth(5);
        canvas.drawCircle(85,85,80,paint1);
        canvas.drawCircle(150,150,90,paint2);
        canvas.drawCircle(240,240,100,paint3);
    }